Cryptology ePrint Archive: BibTeX Citation of Report 2010/148

@misc{cryptoeprint:2010:148,
    author = {Yalin Chen1, Jue-Sam Chou2,* , Chun-Hui Huang3},
    title = {Comments on five smart card based password authentication protocols},
    howpublished = {Cryptology ePrint Archive, Report 2010/148},
    year = {2010},
    note = {\url{http://eprint.iacr.org/}},
}

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.